1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.customization.model.grid; 17 18 import android.content.ContentResolver; 19 import android.content.ContentValues; 20 import android.content.Context; 21 import android.content.res.Resources; 22 import android.database.Cursor; 23 import android.os.Bundle; 24 import android.text.TextUtils; 25 import android.util.Pair; 26 import android.view.SurfaceView; 27 28 import androidx.annotation.Nullable; 29 import androidx.annotation.WorkerThread; 30 31 import com.android.customization.model.ResourceConstants; 32 import com.android.systemui.shared.system.SurfaceViewRequestUtils; 33 import com.android.wallpaper.R; 34 import com.android.wallpaper.util.PreviewUtils; 35 36 import com.bumptech.glide.Glide; 37 38 import java.util.ArrayList; 39 import java.util.List; 40 41 /** 42 * Abstracts the logic to retrieve available grid options from the current Launcher. 43 */ 44 public class LauncherGridOptionsProvider { 45 46 private static final String LIST_OPTIONS = "list_options"; 47 private static final String PREVIEW = "preview"; 48 private static final String DEFAULT_GRID = "default_grid"; 49 50 private static final String COL_NAME = "name"; 51 private static final String COL_ROWS = "rows"; 52 private static final String COL_COLS = "cols"; 53 private static final String COL_PREVIEW_COUNT = "preview_count"; 54 private static final String COL_IS_DEFAULT = "is_default"; 55 56 private static final String METADATA_KEY_PREVIEW_VERSION = "preview_version"; 57 58 private final Context mContext; 59 private final PreviewUtils mPreviewUtils; 60 private List<GridOption> mOptions; 61 private String mVersion; 62 LauncherGridOptionsProvider(Context context, String authorityMetadataKey)63 public LauncherGridOptionsProvider(Context context, String authorityMetadataKey) { 64 mPreviewUtils = new PreviewUtils(context, authorityMetadataKey); 65 mContext = context; 66 } 67 areGridsAvailable()68 boolean areGridsAvailable() { 69 return mPreviewUtils.supportsPreview(); 70 } 71 usesSurfaceView()72 boolean usesSurfaceView() { 73 // If no version code is returned, fall back to V1. 74 return TextUtils.equals(mVersion, "V2"); 75 } 76 77 /** 78 * Retrieve the available grids. 79 * @param reload whether to reload grid options if they're cached. 80 */ 81 @WorkerThread 82 @Nullable fetch(boolean reload)83 Pair<List<GridOption>, String> fetch(boolean reload) { 84 if (!areGridsAvailable()) { 85 return null; 86 } 87 if (mOptions != null && !reload) { 88 return Pair.create(mOptions, mVersion); 89 } 90 ContentResolver resolver = mContext.getContentResolver(); 91 String iconPath = mContext.getResources().getString(Resources.getSystem().getIdentifier( 92 ResourceConstants.CONFIG_ICON_MASK, "string", ResourceConstants.ANDROID_PACKAGE)); 93 try (Cursor c = resolver.query(mPreviewUtils.getUri(LIST_OPTIONS), null, null, null, 94 null)) { 95 mVersion = c.getExtras().getString(METADATA_KEY_PREVIEW_VERSION); 96 mOptions = new ArrayList<>(); 97 while(c.moveToNext()) { 98 String name = c.getString(c.getColumnIndex(COL_NAME)); 99 int rows = c.getInt(c.getColumnIndex(COL_ROWS)); 100 int cols = c.getInt(c.getColumnIndex(COL_COLS)); 101 int previewCount = c.getInt(c.getColumnIndex(COL_PREVIEW_COUNT)); 102 boolean isSet = Boolean.valueOf(c.getString(c.getColumnIndex(COL_IS_DEFAULT))); 103 String title = mContext.getString(R.string.grid_title_pattern, cols, rows); 104 mOptions.add(new GridOption(title, name, isSet, rows, cols, 105 mPreviewUtils.getUri(PREVIEW), previewCount, iconPath)); 106 } 107 Glide.get(mContext).clearDiskCache(); 108 } catch (Exception e) { 109 mOptions = null; 110 mVersion = null; 111 } 112 return Pair.create(mOptions, mVersion); 113 } 114 115 /** 116 * Request rendering of home screen preview via Launcher to Wallpaper using SurfaceView 117 * @param name the grid option name 118 * @param bundle surface view request bundle generated from 119 * {@link SurfaceViewRequestUtils#createSurfaceBundle(SurfaceView)}. 120 */ renderPreview(String name, Bundle bundle)121 void renderPreview(String name, Bundle bundle) { 122 bundle.putString("name", name); 123 mPreviewUtils.renderPreview(bundle); 124 } 125 applyGrid(String name)126 int applyGrid(String name) { 127 ContentValues values = new ContentValues(); 128 values.put("name", name); 129 return mContext.getContentResolver().update(mPreviewUtils.getUri(DEFAULT_GRID), values, 130 null, null); 131 } 132 } 133